when people walked on the moon, they found that they could jump higher than theu could back on earth. why is this true?

None of the alternatives are correct

It's crucial to keep in mind that rolling motion is impossible on a surface with no friction. It will just continue to slide along. The sphere will slide when something is rolling down an incline if the incline's angle is very large or its coefficient of friction is very low.

The ball will continue rolling in the absence of friction. Only friction would prevent it from rolling indefinitely if the second plane's angle of inclination were reduced to zero, making it perfectly horizontal.

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Increasing filter pore size increases filtration rate due to less resistance.

Increasing the pore size of a filter will generally result in an increase in the filtration pore .

Here are the steps to explain this:

It's important to note that increasing pore size may also result in a decrease in the filter's ability to capture smaller particles, since larger pores will allow more particles to pass through. So, increasing the pore size may result in a trade-off between filtration rate and particle capture efficiency.

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The dose equivalent limits for radiation workers are based on the radiation received from the two external and internal sources of radiation.

The dose equivalent limits for radiation workers are established by different national and international regulatory agencies, such as the International Commission on Radiological Protection and the U.S. Nuclear Regulatory Commission.

The limits are outlined to minimize the risk of radiation-induced health effects, such as cancer, while allowing for necessary exposure in various situations, such as in medical treatments or in nuclear power plants.

External sources of radiation contain radiation that comes from outside the body, such as from gamma rays or x-rays.

Internal sources of radiation, on the other hand, come from radioactive materials that are taken into the body through ingestion or inhalation.

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N=m.g

N=72 x 9.8 = 705.6 ≈ 706 N

Answer  Rivers are not considered landforms

Explanation:

Temperatures in the thermosphere are not strictly comparable to those experienced near Earth's surface because the gases of the thermosphere are moving at very high speeds, and the temperature is very high.

The thermosphere lies among the exosphere and the mesosphere. “Thermo” way warmness and the temperature in this layer can reach as much as 4,500 tiers Fahrenheit. in case you have been to hang around inside the thermosphere, though, you'll be very cold because there are not sufficient fuel molecules to transfer the warmth to you.

The thermosphere is the outer layer of the Earth's surroundings, extending from about 53 miles to greater than 370 miles above the surface. The temperature increases rapidly in this layer due to the absorption of huge quantities of incoming excessive electricity sun radiation by using atoms of nitrogen and oxygen.

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Answer:

t= 1,56 s ,   x= 124,8 m , v = (80 i^ - 15,288 j ) m/s

Explanation:

Este es un ejercicio de lanzamiento proyectiles, comencemos por encontrar el tiempo que tarda en llegar al piso

        y = y₀ + \(v_{oy}\) t – ½ g t²

en este caso la altura inicial es y₀= 12 m y llega a y=0 , como es lanzado horizontalmente la velocidad vertical es cero (v_{oy}=0)

       0 = y₀ – ½ g t²

       t= √ (2 y₀/g)

calculemos

       t= √ ( 2 12 / 9,8)

       t= 1,56 s

El alcance del proyectil es la distancia horizontal recorrida  

        x = v₀ₓ t

        x = 80 1,56

        x= 124,8 m

La velocidad de impacto cuando toca el suelo

        vx = v₀ₓ = 80 ms

        \(v_{y}\) = v_{oy} – gt

        v_{y} = - 9,8 1,56

        v_{y} = - 15,288 m/s

la velocidad es

       v = (80 i^ - 15,288 j ) m/s

Traducttion  

This is a projectile launching exercise, let's start by finding the time it takes to reach the ground

        y = y₀ + v_{oy} t - ½ g t²

in this case the initial height is i = 12 m and it reaches y = 0, as it is thrown horizontally the vertical speed is zero (\(v_{oy}\) = 0)

       0 =y₀I - ½ g t²

       t = √ (2y₀ / g)

let's calculate

       t = √ (2 12 / 9.8)

       t = 1.56 s

Projectile range is the horizontal distance traveled

        x = v₀ₓ t

        x = 80 1.56

        x = 124.8 m

Impact speed when it hits the ground

        vₓ = v₀ₓ = 80 ms

        v_{y} = v_{oy} - gt

        v_{y} = - 9.8 1.56

        v_{y} = - 15,288 m / s

the speed is

       v = (80 i ^ - 15,288 j) m / s

The phase of the moon when the moon is on the opposite side of the earth from the sun is the full moon. This happens when the sun, earth, and moon are aligned, with the earth in the middle.

The full moon appears when the sun’s light reflects off the entire surface of the moon, making it appear completely illuminated from our perspective on earth.Therefore, option A is the correct answer: The full moon.

When the moon is on the opposite side of the Earth from the sun, it is in the full moon phase. During this phase, the sun illuminates the entire side of the moon facing the Earth, making it appear fully lit and round. This occurs because the sun, Earth, and moon are aligned in a straight line, with the Earth in the middle. The full moon phase is characterized by a bright, round shape and is often considered the most visually striking lunar phase. It occurs approximately once every 29.5 days as the moon orbits around the Earth.

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Answer:

B.

Explanation:

The addition of vectors is commutative, so adding in any order will lead to the same result; just draw a straight line from the starting point to the tip of the final vector.

Radial component of the linear acceleration = 99.47 m/s^2

The diameter of the wheel, d = 51 cm

The radius, r = d/2 = 51/2 = 25.5 cm

r = 25.5/100 = 0.255 m

r = 0.255 m

At t = 1.1, first calculate the new angular velocity

The radial component of the linear acceleration is given as:

Answer:

i believe it would be water

Explanation:

Answer:

When like charges come together, they repel each other. For instance, when the north and south poles of a magnet come together, they push each other apart. The like poles in the magnet repel each other and unlike poles attract each other much. The same reaction occurs in like and unlike charges. Also, the repulsion acts along the line between the two charges.

When holding the string still, the tension in the right string is equal to the weight of the hanging mass, while the tension in the left string is zero. Once the string is released, the tension in both sides of the string remains the same.

1. When you hold the string still, preventing movement, there is no acceleration in the system. This means that the net force acting on each mass is zero.

2. The right string is connected to the hanging mass. Since the mass is in equilibrium, the tension in the right string is equal to the weight of the hanging mass (T_right = m * g, where m is the mass and g is the acceleration due to gravity).

3. The left string is connected to the mass on the left side. Since there is no acceleration in the system, the tension in the left string must be zero, as there is no net force acting on the left mass (T_left = 0).

4. When you let go of the string, the system is no longer in equilibrium. The weights of the masses cause a net force to act on each mass.

5. However, the tension in the string does not change instantaneously. The tension in the left and right strings remains the same from the moment you held the string still to the moment the masses start to move. This is because there is no change in the tension until the system experiences acceleration, which occurs after the release of the string.

6. Once the masses start to move, the tension in both sides of the string adjusts to accommodate the new equilibrium positions of the masses.

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Answer:

Linear motion involves an object moving in a straight line in one dimension, like a car driving on a perfectly straight road, while projectile motion involves two dimensions, like a cannonball firing. Circular motion occurs in a circle, such as when a ball whirls on a string.

Explanation:

Uniform Motion in a Straight Line. If a body travels in a straight line and covers an equal amount of distance in an equal interval of time, then it is said to have uniform motion. In simple words, a body is said to have uniform acceleration if the rate of change of its velocity remains constant. A straight line does not mean that the object is not moving! This graph shows increasing speed. In physics, circular motion is a movement of an object along the circumference of a circle or rotation along a circular path. It can be uniform, with constant angular rate of rotation and constant speed, or non-uniform with a changing rate of rotation.There are three mathematical quantities that will be of primary interest to us as we analyze the motion of objects in circles. These three quantities are speed, acceleration and force. The speed of an object moving in a circle is given by the following equation. Projectile motion is a form of motion experienced by an object or particle that is projected near the Earth's surface and moves along a curved path under the action of gravity only. This curved path was shown by Galileo to be a parabola, but may also be a line in the special case when it is thrown directly upwards.

The major similarity between straight line motion, circular motion, and projectile motion is that they involve the change in the position of an object.

The major difference between the motions is that straight-line motion occurs in a straight path, circular motion occurs in a circular path and projectile motion occurs in a parabolic path.

The similarities between straight line motion, circular motion, and projectile motion;

The differences between straight line motion, circular motion, and projectile motion;

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The coefficient of kinetic friction between the box and the floor is 0.11.

Coefficient of friction is a measure of the amount of friction existing between two surfaces.

The coefficient of kinetic friction between the box and the floor is calculated as follows;

F - Ff = ma

where;

F - μmg = ma

at a constant velocity, acceleration, a = 0

F - μmg = 0

F = μmg

μ = F/mg

μ = (52) / (50 x 9.8)

μ = 0.11

Thus, the coefficient of kinetic friction between the box and the floor is 0.11.

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Answer:

radio waves

Explanation:

radio waves

The horizontal acceleration of the rock 2 is zero.

The given parameters;

initial velocity of Rock 1 = 0

initial horizontal velocity of Rock 2 = 5 m/s

An object falling under the influence of gravity experiences acceleration due to gravity which is always directed vertically downwards.

An object moving horizontally is not affected by gravity and thus will experience no acceleration in the horizontal direction.

Thus, we can conclude that the horizontal acceleration of the rock 2 is zero.

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Answer:

 V = 2.52 10³ V

Explanation:

The electric potential for a point charge is

       V = k ∑ \(\frac{q_i}{r_i}\)

In this case the formula is

       V = k (\(\frac{q_1}{r_1} + \frac{q_2}{r_2}\))

distances are the absolute value

       r₁ =√ (7.1 -0)² = 7.1 m

       r₁ =√ (7.1 - 14.3)² = 7.2 m

we substitute

       V = 9 10⁹ (q₁ / 7.1 + q₂ / 7.2)

we have two possibilities

* different charges

         V = 9 10⁹ (q₁ / 7.1 + q₂ / 7.2)

* equal charges and same sign

          q₁ = q₂ = q

         V = 9 10⁹ q (1 / 7.1 + 1 / 7.2) = p 9 10⁹   0.2797

         V = 2.52 10⁹ q

if we assume a value of the charge, for example q = 1 10⁻⁶ c

           V = 2.52 10⁹ 1 10⁻⁶

            V = 2.52 10³ V

The tangential speed on the outer edge of a rotating carousel is dependent on the carousel's rotational speed and the distance from the center of rotation to the outer edge.

It can be calculated using the formula: tangential speed = radius × angular speed

Where the radius is the distance from the center of rotation to the outer edge, and the angular speed is the rate of rotation measured in radians per second.

The carousel's rotational speed of a carousel refers to the rate at which it completes one full revolution, and it is usually measured in units of revolutions per minute (RPM) or radians per second (rad/s). The faster the carousel rotates, the higher the outer edge's tangential speed. The rotational speed of a carousel can be controlled by adjusting the power source that drives it, such as an electric motor.

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Answer:

Rounded down to 2 digits, 0.10 grams.

Explanation:

6.77 - 3.37 = 3.4

3.4 / 35 = 0.09714285

The mass of one match in grams will be 0.097 g

The unitary method is a technique for solving a problem by first finding the value of  a single unit and then finding the necessary value by multiplying the single unit value,

mass of 35 matches = mass of box full of matches - mass of box itself

mass of 35 matches = 6.77 g - 3.37 g

                                  = 3.4 g

using unitary method , we can write

if 35 matches can have a mass of = 3.4 g

1 match can have a mass of =  3.4/35 g

                                                 = 0.097 g

The mass of one match in grams will be 0.097 g

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It is equivalent to work done overtime, option A is true.

Potential energy is the type of energy that is possessed by a body that is at complete rest. Potential energy is then converted into Kinetic energy when an external force is applied to the body which makes the body stay in motion.

We know that the Potential energy (PE) = mgh, where m is the mass of the body, g is the acceleration due to gravity, and h is the height of the body from the ground.

When a significant amount of work is done on the body from moving it from height h1 to h2 that is :

W= force * displacement = mgh1-mgh2

Thus, potential energy is equivalent to the work done over time.

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Answer:

a = 13.3 m/s^2

Explanation:

Comment

This is an application question for the formula a = (vf - vi)/t

Givens

t = 6 seconds  (this is the given time in the formula)

vi = 0 The plane starts from rest

vf = 80m/s  This is its final speed after 6 seconds

a = ?

Formula

a = (vf - vi) /t                

Solution

a = (vf - vi) /t                    Substitute the givens into the formula

a = (80 - 0)/6                  Drop the 0 and divide.

a = 80/6

a = 13.3 m/s^2

Answer:

In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not.

However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed.

Hope this helps :)

(a) The budget constraint can be written as: C = wL + V, where C is consumption, w is the real wage, L is leisure, and V is non-labor market income.

(b) With ẞ = 1/2, V = 100, and w = 200, John's optimal supply of labor cannot be determined without information about his preferences for leisure and consumption. The utility function only represents his preferences, but we need additional information to determine the specific amount of labor he would choose to supply.

(c) John's total income is the sum of his labor income and non-labor market income: Total income = Labor income + Non-labor income = wL + V. Without knowing the specific value of L, we cannot calculate the total income.

(d) Similarly, without knowing John's preferences for leisure and consumption, we cannot determine the specific level of consumption he would choose.

(e) In the case where John is subject to a 10% income tax on labor income only, his new optimal supply of labor would depend on the tax rate's impact on his preferences and the trade-off between leisure and consumption. Without further information on his preferences and the specific tax structure, we cannot determine the new optimal supply of labor.

Additional information about John's preferences for leisure and consumption, as well as the specific tax structure, is necessary to calculate his optimal labor supply, total income, consumption, and the impact of the income tax on his labor supply.

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Answer:

ur awnser is d

Explanation:

!(*´∇`)ﾉ

Low-ambient temperatures , Either the flood condenser approach or the fan-speed control method should be used to manage low ambient air conditions of -30 or -40°F (-35 or -40°C).

The air temperature of any item or setting where equipment is kept is known as the ambient temperature. The definition of the term ambient is "relating to the immediate surroundings." The normal temperature or baseline temperature are other names for this number. This kind of ambient temperature is sometimes referred to as room temperature and normally ranges from 68 to 77 degrees Fahrenheit.  If interior cooling is needed when external temperatures are low, a Low Ambient Kit is designed to keep system pressures at acceptable levels.

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Answer:

W 1920 N

Explanation:

200kg at a location where g=9.6m/s^2

Physical properties such as color, shape, size, weight, odor, melting point, boiling point, and density can be observed without destroying the substance.

Physical properties are characteristics of a substance that can be observed and measured without changing the substance's chemical composition. Examples of physical properties include color, density, hardness, melting point, boiling point, and electrical conductivity. These properties are determined through experiments and/or observations. Physical properties can be used to identify and classify a material. They can also be used to differentiate between different forms of the same material, such as different allotropes of the same element. Physical properties are also important for understanding how materials interact with each other and how they respond to the environment.

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Answer:

a. Magnetic field is a location of a vector field around an electric current or magnet formed due to moving electric charges, or magnetic material and has a magnetic effect and exerts a force on other magnetic materials, electric current, and electric charges. The Earth's magnetic field that has the effect of turning a compass needle is an example of a magnetic field

b. The number of turns of the coil, N, in Diagram 1.1 > The number of turns of the coil, N, in Diagram 1.2

The pattern of the iron filings in Diagram 1.1 are closer with less space in between than the pattern of iron filings in Diagram 1.2

The angle of deflection of the ammeter pointer in Diagram 1.1 will be > The angle of deflection of the ammeter pointer in Diagram 1.2, given that the number of turns and current are inversely proportional

c. i. The pattern of the iron filings will have rings which are more closely arranged to each other as the strength of the magnetic field is increased

ii. As the number of turns is increased, the magnetic field is increased

Explanation: